As the effects of ESSA take hold and the realization that we are in a post-NCLB world become a realization, teachers will be able to innovate, achieve autonomy, and take on a leadership role traditionally (at least in recent decades) held by administrators.
Here is some reading material that might illuminate the way forward:
Massachusetts Department of Education presentation
“Sustainable Leadership” article by Andy Hargreaves and Dean Fink
Teach to Lead – official website
Center for Teacher Quality article